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47 lines
1.5 KiB
47 lines
1.5 KiB
// Amplify Shader Editor - Visual Shader Editing Tool
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// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
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using UnityEditor;
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using UnityEngine;
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namespace AmplifyShaderEditor
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{
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public class DragAndDropTool
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{
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public delegate void OnValidDropObject(params UnityEngine.Object[] draggedObjs );
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public event OnValidDropObject OnValidDropObjectEvt;
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public void Destroy()
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{
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OnValidDropObjectEvt = null;
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}
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public void TestDragAndDrop( Rect dropArea )
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{
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Event currentEvent = Event.current;
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EventType currentEventType = currentEvent.type;
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switch (currentEventType)
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{
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case EventType.DragUpdated:
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case EventType.DragPerform:
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{
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if (!dropArea.Contains(currentEvent.mousePosition))
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return;
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DragAndDrop.visualMode = DragAndDropVisualMode.Copy;
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if (currentEvent.type == EventType.DragPerform)
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{
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DragAndDrop.AcceptDrag();
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if (OnValidDropObjectEvt != null)
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{
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OnValidDropObjectEvt(DragAndDrop.objectReferences);
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}
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}
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}break;
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case EventType.DragExited:DragAndDrop.PrepareStartDrag();break;
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}
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}
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}
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}
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